Improvement in adjustable scaffolds



'z z of Fig. 2.

UNITED STATES PATENT QEEIoE HENRY HILLIKER, ST. LOUIS, MISSOURI,ASSIGNOR OF ONE-HALF HIS RIGHT TO WILLIAM G. WARREN.

IMPROVEMENT IN ADJUSTABLE SCAFFOLDS.

Specification forming part of Letters Patent No. 169,904, dated November16, 1875; application filed May 1, 1875.

quires much time and labor, and in fact, when a few such alterationshave been made, the scaffold has become nearly or quite useless for allpurposes.

My present invention consists in a scaffold constructed so that it isadjustable as to area and height, and so that it may be readily foldedup when not in use, or moved from room to room, the construction beingas hereinafter described.

In the accompanying drawing, Figure 1 is a sectional elevation of thescaffold on the line Fig.2 is a sectional elevation on the line on m andyy of Fig. 1. Fig. 3 shows one of the stands detached and folded up.Fig. 4: shows one of the stand-foundations detached, it being a detail.

Similar letters of reference indicate corresponding parts.

A represents the main stand,which is placed on the foundation B, havingbraces O, which are hinged to the stand, so that they may be i turnedup, as seen in Fig. 3. The stand is attached to the foundation B by ashort tenon,

D, and mortise E in the center of the foundation, and by the braces O,which are attached to the foundation by the slots F, the tenons G, andpins H. I are mortises in the stands, which admit the rails J. K is amiddle stand or support, which has but two braces, attached to a singlefoundation, L, the braces being attached to the foundation and hingedto-the stand, as already described. stand has Inortises through it,marked m, which are sufficiently broad to allow the bars or rails J tolap past each other, as seen at N, Fig. l.

The scaffold may be contracted or expanded to suit apartments ofdifferent size by shoving the outer stands A nearer together or pullingthem farther apart, or by adding more stands.

The rails J may be placed in mortises below, (see Fig. 1,) to adjust thescaffold to the required height.

0 is a scaffold-board resting on the rails J. At the top of all thestand-slots P, instead of mortises, are made.

This scaffold can be taken down and folded up when it is not requiredfor use. It can be carried up or down stairs with perfectease, andhandled generally much more conveniently than scaffolds of ordinaryconstruction.

Having thus described m yinvention, I claim as new and desire to secureby Letters Patent- A scaffold constructed as shown and described, havingstands A and K, with aseries of rail-mortises, I, and slots P, hingedbraces O, and foundations B and L, as set forth.

" ENRY HILLIKER.

This middle

